Ground cover rose plant named ‘NOA83100B’

ABSTRACT

A new and distinct variety for Ground Cover Rose plant is provided which forms on a substantially continuous basis sprays of attractive long-lasting bright red blossoms. The blossoms open on a reliable basis and retains their attractiveness upon aging. The new variety exhibits a compact spreading growth habit. The foliage is dark green and glossy and contrasts well with the bright red blossom coloration. The surfaces of leaves commonly are somewhat curled and partially closed. The blossom petals commonly detach cleanly upon full maturity. The plant propagates well from cuttings and by budding. Excellent resistance to Blackspot, Powdery Mildew, and Rust are displayed, and the plant is particularly well suited for growing as an attractive ornamental ground cover in the landscape.

Botanical/commercial classification: Rosa hybrida/Ground Cover RosePlant.

Varietal denomination: cv. ‘NOA83100B’.

SUMMARY OF THE INVENTION

Ground Cover rose plants are known and are being used to advantage in anincreasing number of landscape plans and home gardens. However, thereremains a need for additional varieties of Ground Cover roses with thedemand being the greatest for those having highly attractive blossoms incombination with good disease resistance.

The new variety of Rosa hybrida Ground Cover rose plant of the presentinvention was created at Gütersloh, Germany, by artificial pollinationwherein two parents were crossed which previously had been studied inthe hope that they would contribute the desired characteristics. Thefemale parent (i.e., the seed parent) was an unnamed and unreleasedseedling (non-patented in the Untied States) maintained by Noack Rosenat Gütersloh, Germany. The male parent (i.e., the pollen parent) was‘Rotfassade’ variety (non-patented in the United States). The parentageof the new variety can be summarized as follows:

 Unnamed Seedling×‘Rotfassade’.

The seeds resulting from the above pollination were sown and smallplants were obtained which physically and biologically differ from eachother. Selective study resulted in the identification of a single plantto the new variety.

It is found that the new variety of Ground Cover rose plant possessesthe following combination of characteristics:

-   -   (a) forms in sprays attractive long-lasting bright red blossoms,    -   (b) exhibits a dense compact and spreading growth habit,    -   (c) forms attractive glossy dark green foliage that contrasts        well with the bright red blossoms wherein the surfaces of the        leaflets commonly are somewhat curled and partially closed,    -   (d) exhibits exellent disease resistance with respect to        Blackspot, Powdery Mildew, and Rust, and    -   (e) is particularly well suited for growing as attractive        ornamentation in the landscape.

The new variety meets the needs of the horticultural industry and can begrown to advantage as an attractive ornamental ground cover in parks,gardens, public areas, and residential landscapes.

The new variety of the present invention can be readily distinguishedfrom its ancestors. More specifically, the unnamed female parent formspale orange blossoms and smaller foliage, and the ‘Rotfassade’ maleparent is a climber that forms large medium red blossoms.

The new variety of the present invention also can be readilydistinguished from similar Ground Cover rose varieties upon aninspection of the flower coloration. For instance, the ‘Korstesgli’variety (non-patented in the United States) forms blossoms that areR.H.S. Group No. 45D in cloration, and the ‘Kortemma’ variety (U.S.Plant Pat. No. 9,115) forms blossoms that are R.H.S. Group No. 45A incoloration.

The new variety of the present invention beginning in 2000 has beenasexually reproduced by the rooting of cuttings, and by budding. Suchasexual reproduction as performed in Gütersloh, Germany, hasdemonstrated that the characteristics of the new variety are firmlyfixed and stable and are strictly transmissible from one generation toanother. The new variety asexually reproduces in a true to type mannerfrom one generation to another.

The new variety of the present invention has been named ‘NOA83100B’.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show as nearly true as it is reasonablypossible to make the same, in color illustrations of this character,typical specimens of the new variety while growing outdoors. Theillustrated rose plants were photographed during July, 2004, whilegrowing in a field at Gütersloh, Germany. Such plants had been buddedapproximately one and one-half years earlier.

FIG. 1 illustrates a close view of the attractive bright red blossoms ofthe new variety.

FIG. 2 illustrates at the right the upper and under surfaces of typicalleaves and a cluster of foliage with a typical unopened bud, and at theleft opening buds in various stages of opening, together with openblossoms and foliage wherein the glossy upper surface of the dark greenleaflets is shown. The configuration of the somewhat curled andpartially closed leaflets is illustrated. Dimensions in centimeters areincluded at the center.

DETAILED DESCRIPTION

The chart used in the identification of the colors is that of The RoyalHorticultural Society (R.H.S. Colour Chart) of London, England. Colorterminology in common terms sometimes is included as an aid to thereader. Such color terminology is to be accorded its customarydictionary significance. The description is based on the observation oftypical specimens of the new variety while growing outdoors during Julyat Gütersloh, Germany.

-   Class: Ground Cover.-   Plant:    -   -   Form.—Vigorous, young plants exhibit a dense compact growth            habit, and with further maturity spread to form a compact            bush with dense foliage that serves well as ground cover.        -   Height.—Approximately 60 cm on average.        -   Width.—Approximately 80 cm on average.-   Branches:    -   -   Color.—Young stems: Green Group 139C with a smooth surface.            Adult wood: Green Group 138B and darker green than the young            stems and with a smooth surface.        -   Thorns.—Size: medium, aproximately 4.5 mm in length on            average, slightly curved downward on the upper surface, and            concave on the under surface. Position: irregular. Color:            initially Green Group 138B when immature and changing to            Greyed-Orange Group 172A at maturity. Quantity: typical for            a Ground Cover rose plant.-   Leaves:    -   -   Stipules.—Green in coloration.        -   Leaflets.—Number: commonly 5. Configuration: generally oval            with a pointed apex, and commonly curled upwards at the            margin thereby giving the leaves partially closed            appearance. Quantity: very abundant. Size: medium.            Serration: slightly serrate. Color: (young foliage): Upper            surface: Green Group 138B. Under surface: Green Group 138B.            Color: (adult foliage): Upper surface: Green Group 139B and            glossy. Under surface: Green Group 139C and lighter green            than the upper surface. General appearance: dense, dark            green foliage that is glossy on the upper surface and matte            on the under surface with the curled nature of the leaves            being readily apparent. Texture: leathery. Stipules: green            in coloration.-   Inflorescence:    -   -   Number of flowers.—In clusters of flowers as a large spray.        -   Peduncle.—Soft green in coloration.        -   Sepals.—Shape: commonly do not extend much beyond the petals            of the bud, pointed, and approximately 2 cm in length on            average.        -   Buds.—Color when opening: strong bright red, Red Group 44A            on the upper and lower surfaces.        -   Flower.—Form: somewhat flattened. Appearance: smooth on both            petal surfaces. Diameter: approximately 5 cm on average.            Color (when opening begins): Upper surface: predominantly            Red Group 44A. Color (when blooming): Upper surface:            predominantly Red Group 44A. The bright yellow coloration,            Yellow Group 13A, of the pollen and the reproductive organs            commonly is visible at the center. Under surface:            predominantly Red Group 44A. Color (at the end of opening):            Upper surface: bright red coloration, the Red Group 44A            persists. Fragrance: none. Lasting quality: very good. Petal            form: broad, fan-shaped, curved with a somewhat indented            central area and margin areas that are slightly curved            towards the center. Petal number: commonly approximately 16            on average. Petal arrangement: generally arranged in a            regular pattern with overlapping edges. Petal drop: good            with the petals detaching cleanly upon fully maturity.            Stamens: regularly arranged around the styles. Filaments:            Yellow-Orange Group 15A in coloration. Pollen: Yellow-Orange            Group 15A in coloration. Stigmas: Yellow-Orange Group 15C in            coloration. Styles: thin, regularly arranged at the center,            tend to be substantially the same length, and Yellow-Orange            Group 17B in coloration. Hips: generally oval to round,            smooth in texture, approximately 1 cm in length, and            initially green (Green Group 135C) in coloration changing to            red (Red Group 42A) with maturity.-   Development:    -   -   Vegetation.—Strong, compact, and vigorous.        -   Blooming.—Substantially continuous throughout the season in            large sprays.        -   Aptitude to bear fruit.—Slight.        -   Winter hardiness.—Good.        -   Resistance to diseases.—Excellent with respect to Blackspot,            Powdery Mildew, and Rust.

1. A new and distinct Ground Cover Rose plant characterized by thefollowing combination of characteristics: (a) forms in sprays attractivelong-lasting bright red blossoms, (b) exhibits a dense compact andspreading growth habit; (c) forms attractive glossy dark green foliagethat contrasts well with the bright red blossoms wherein the surfaces ofthe leaflets commonly are somewhat curled and partially closed, (c)exhibits excellent disease resistance with respect to Blackspot, PowderyMildew, and Rust, and (d) is particularly well suited for growing asattractive ornamentation in the landscape; substantially as illustratedand described.